Bard W18HA-A Installation Instructions Manual

Bard
Brand
Bard
Model
W18HA-A
Category
Heat pumps
Type
Installation Instructions Manual
Page 1 of 34
WALL MOUNTED PACKAGE
HEAT PUMP
Models:
INSTALLATION INSTRUCTIONS
W18HA-A W24HA-A
W24HA-B
W24HA-C
W30HA-A
W30HA-B
W30HA-C
W36HA-A
W36HA-B
W36HA-C
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual: 2100-654C
Supersedes: 2100-654B
Date: 7-26-17
W42HA-A
W42HA-B
W42HA-C
W48HA-A
W48HA-B
W48HA-C
W60HA-A
W60HA-B
W60HA-C
W24HADA
W24HADB
W24HADC
W30HADA
W30HADB
W30HADC
W36HADA
W36HADB
W36HADC
W42HADA
W42HADB
W42HADC
W48HADA
W48HADB
W48HADC
W60HADA
W60HADB
W60HADC
Manual 2100-654C
Page 2 of 34
CONTENTS
Figures
Figure 1 Fresh Air Damper .................................. 5
Figure 2 Unit Dimensions ................................... 7
Figure 3A Mounting Instructions – W18H, W24H .... 8
Figure 3B Mounting Instructions – W30H, W36H .... 9
Figure 3C Mounting Instructions – W42H, W48H .. 10
Figure 3D Mounting Instructions – W60H ............. 11
Figure 4 Electric Heat Clearance ....................... 12
Figure 5 Wall Mounting Instructions .................. 13
Figure 6 Wall Mounting Instructions .................. 13
Figure 7 Common Wall Mounting Installations .... 14
Figure 8 Programmable Thermostat Connections . 17
Figure 9 Non-Programmable Thermostat
Connections ....................................... 18
Figure 10 Defrost Control Board .......................... 23
Figure 11 Motor Connections .............................. 26
Figure 12 Motor Connections .............................. 27
Figure 13 Fan Blade Setting ............................... 28
Tables
Table 1 Wall Thermostats ................................ 16
Table 2 Humidity Controls ............................... 16
Table 3 CO
2
Controller ..................................... 16
Table 4 Thermostat Wire Size ........................... 16
Table 5 Troubleshooting .................................. 24
Temperature vs. Resistance .................. 25
Table 6 Fan Blade Dimension .......................... 28
Table 7A Cooling Pressure ................................. 29
Table 7B Heating Pressure ................................. 29
Table 8 Electrical Specifications ...................... 30
Table 9 Recommended Airflow ......................... 31
Table 10 Indoor Blower Performance .................. 31
Table 11 Maximum ESP of Operation
Electric Heat Only Tables ..................... 32
Table 12 Electric Heat ...................................... 32
Table 13 Optional Accessories ........................... 33
Table 14 Vent and Control Options ..................... 34
Getting Other Information and Publications .... 3
Wall Mount General Information ......................... 4
Heat Pump Wall Mount Model Nomenclature .......... 4
Shipping Damage ................................................. 4
General ............................................................... 4
Duct Work ........................................................... 4
Filters ................................................................. 5
Fresh Air Intake ................................................... 5
Condensate Drain ................................................ 5
Installation ............................................................... 6
Wall Mounting Information .................................... 6
Mounting the Unit ................................................ 6
Clearances Required ............................................. 6
Minimum Clearances ............................................ 6
Wiring – Main Power ........................................... 15
Wiring – Low Voltage Wiring ................................. 15
Start Up ................................................................... 19
General ............................................................. 19
Topping Off System Charge ................................. 19
Safety Practices ................................................. 19
Important Installer Note ...................................... 20
High and Low Pressure Switch ............................. 20
Three Phase Scroll Compressor Start Up
Information ........................................................ 20
Phase Monitor .................................................... 20
Condenser Fan Operation .................................... 20
Service Hints ..................................................... 20
Vent Connection Plug .......................................... 20
Sequence of Operation ........................................ 21
Pressure Service Ports ........................................ 21
Defrost Cycle ..................................................... 21
Service ..................................................................... 24
Solid State Heat Pump Control Troubleshooting
Procedure ......................................................... 24
Checking Temperature Sensor Outside
Unit Circuit ........................................................ 25
Troubleshooting Nidec SelecTech Series ECM
Motors ............................................................... 26
Fan Blade Setting Dimensions ............................. 28
Removal of Fan Shroud ....................................... 28
R-410A Refrigerant Charge ................................. 28
Manual 2100-654C
Page 3 of 34
GETTING OTHER INFORMATION AND PUBLICATIONS
These publications can help when installing the heat
pump. They can usually be found at the local library
or purchased directly from the publisher. Be sure to
consult the current edition of each standard.
National Electrical Code ......................ANSI/NFPA 70
Standard for the Installation ..............ANSI/NFPA 90A
of Air Conditioning and Ventilating Systems
Standard for Warm Air ....................... ANSI/NFPA 90B
Heating and Air Conditioning Systems
Load Calculation for ......................... ACCA Manual J
Residential Winter and Summer Air Conditioning
Duct Design for Residential ............... ACCA Manual D
Winter and Summer Air Conditioning and Equipment
Selection
For more information, contact these publishers:
ACCA Air Conditioning Contractors of America
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: (202) 483-9370
Fax: (202) 234-4721
ANSI American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: (212) 642-4900
Fax: (212) 302-1286
ASHRAE American Society of Heating, Refrigeration
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: (404) 636-8400
Fax: (404) 321-5478
NFPA National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: (800) 344-3555
Fax: (617) 984-7057
Manual 2100-654C
Page 4 of 34
WALL MOUNT GENERAL INFORMATION
HEAT PUMP WALL MOUNT MODEL NOMENCLATURE
W 42 H A – A 10 X X X X X A
NOTE: Vent options X, B and M are without exhaust capability. May require separate field-supplied barometric relief in building.
SHIPPING DAMAGE
Upon receipt of equipment, the carton should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact
the last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.
GENERAL
The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.
The refrigerant system is completely assembled and
charged. All internal wiring is complete.
The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and
return ducts.
These instructions explain the recommended method
to install the air cooled self-contained unit and the
electrical wiring connections to the unit.
These instructions and any instructions packaged with
any separate equipment required to make up the entire
air conditioning system should be carefully read before
beginning the installation. Note particularly “Starting
Procedure” and any tags and/or labels attached to the
equipment.
While these instructions are intended as a general
recommended guide, they do not supersede any
national and/or local codes in any way. Authorities
having jurisdiction should be consulted before the
installation is made. See page 3 for information on
codes and standards.
Size of unit for a proposed installation should be
based on heat loss/gain calculation made according
to methods of Air Conditioning Contractors of America
(ACCA). The air duct should be installed in accordance
with the Standards of the National Fire Protection
Association for the Installation of Air Conditioning and
Ventilating Systems of Other Than Residence Type,
NFPA No. 90A, and Residence Type Warm Air Heating
and Air Conditioning Systems, NFPA No. 90B. Where
local regulations are at a variance with instructions,
installer should adhere to local codes.
DUCT WORK
All duct work, supply and return, must be properly
sized for the design airflow requirement of the
equipment. Air Conditioning Contractors of America
(ACCA) is an excellent guide to proper sizing. All duct
work or portions thereof not in the conditioned space
should be properly insulated in order to both conserve
energy and prevent condensation or moisture damage.
MODEL NUMBER
CONTROL MODULES
(See Spec. Sheet S3523)
VOLTS & PHASE
A - 230/208/60/1
B - 230/208/60/3
C - 460/60/3
REVISIONS
VENTILATION OPTIONS
X - Barometric Fresh Air Damper (Standard)
B - Blank-Off Plate
M - Motorized Fresh Air Damper
V - Commercial Ventilator - Motorized with Exhaust
S - Economizer (Std.) - Enthalpy
W - Economizer (Full Flow) - Enthalpy
T - Economizer (Full Flow) - Temperature
R - Energy Recovery Ventilator - Motorized with Exhaust
(See Spec. Sheet S3523)
FILTER OPTIONS
X - 1" Throwaway (Standard)
W - 1" Washable
P - 2" Pleated
COLOR OPTIONS
X - Beige (Standard)
1 - White
4 - Buckeye Gray
5 - Desert Brown
8 - Dark Bronze
COIL OPTIONS
X - Standard
1 - Phenolic Coated Evaporator
2 - Phenolic Coated Condenser
3 - Phenolic Coated Evaporator
and Condenser
OUTLET OPTIONS
X - Front
CAPACITY
18 - 1½ Ton
24 - 2 Ton
30 - 2½ Ton
36 - 3 Ton
42 - 3½ Ton
48 - 4 Ton
60 - 5 Ton
H - Heat Pump
SPECIALTY PRODUCTS
(Non-Standard)
KW
Insert “D” for dehumidification with hot gas reheat. Reference Form 7960-702 for complete details.
For 0 KW and circuit breakers (230/208 volt) or toggle disconnect (460V) applications, insert 0Z in the KW field of the model number.
Manual 2100-654C
Page 5 of 34
Refer to Maximum ESP of Operation Electric Heat
Table 11 on page 32.
Design the duct work according to methods given by
the Air Conditioning Contractors of America (ACCA).
When duct runs through unheated spaces, it should
be insulated with a minimum of 1" of insulation. Use
insulation with a vapor barrier on the outside of the
insulation. Flexible joints should be used to connect
the duct work to the equipment in order to keep the
noise transmission to a minimum.
Models W18 and W24 are approved for 0" clearance to
the supply duct. For models W30, W36, W42, W48
and W60, a 1/4" clearance to combustible material for
the first 3' of duct attached to the outlet air frame is
required. See MOUNTING THE UNIT on page 6 and
Figures 3A – D (pages 8 – 11) and Figure 4 (page 12)
for further details.
Ducts through the walls must be insulated and all joints
taped or sealed to prevent air or moisture entering the
wall cavity.
Some installations may not require any return air duct.
A metallic return air grille is required with installations
not requiring a return air duct. The spacing between
louvers on the grille shall not be larger than 5/8".
Any grille that meets with 5/8" louver criteria may be
used. It is recommended that Bard Return Air Grille
Kit RG-2W through RG-5W or RFG-2W through RFG-
5W be installed when no return duct is used. Contact
distributor or factory for ordering information. If using
a return air filter grille, filters must be of sufficient size
to allow a maximum velocity of 400 fpm.
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to
installation only in a single story structure.
FILTERS
A 1" throwaway filter is standard with each unit. The
filter slides into position making it easy to service. This
filter can be serviced from the outside by removing the
filter access panel. A 1" washable filter and 2" pleated
filter are also available as optional accessories. The
internal filter brackets are adjustable to accommodate
the 2" filter by bending two tabs down on each side of
the filter support bracket.
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in
the service door.
If the unit is equipped with a fresh air damper
assembly, the assembly is shipped already attached
to the unit. The damper blade is locked in the
closed position. To allow the damper to operate, the
maximum and minimum blade position stops must be
installed (see Figure 1).
All capacity, efficiency and cost of operation
information is based upon the fresh air blank-off plate
in place and is recommended for maximum energy
efficiency.
The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.
CONDENSATE DRAIN
A plastic drain hose extends from the drain pan at
the top of the unit down to the unit base. There are
openings in the unit base for the drain hose to pass
through. In the event the drain hose is connected to
a drain system of some type, it must be an open or
vented type system to assure proper drainage.
MIS-938
BLADE IS LOCKED CLOSED
FOR SHIPPING
FIGURE 1
Fresh Air Damper
Manual 2100-654C
Page 6 of 34
Clearances Required for Service Access
and Adequate Condenser Airflow
MODELS LEFT SIDE RIGHT SIDE
W18H, W24H, W30H, W36H 15" 20"
W42H, W48H, W60H 20" 20"
Minimum Clearances Required to
Combustible Materials
MODELS
SUPPLY AIR DUCT
FIRST 3'
CABINET
W18H/W24H 0" 0"
W30H/W36H 1/4" 0"
W42H/W48H/W60H 1/4" 0"
INSTALLATION
WARNING
Failure to provide the 1/4" clearance between
the supply duct and a combustible surface
for the rst 3' of duct can result in re causing
damage, injury or death.
WALL MOUNTING INFORMATION
1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figures
3A – D.
2. On wood frame walls, the wall construction must
be strong and rigid enough to carry the weight of
the unit without transmitting any unit vibration.
3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the
weight of the installed unit.
NOTE: Before mounting the heat pump unit,
consideration should be given to the
condensate removal from the outdoor coil
when in heating mode. The unit must be
mounted high enough above grade to ensure
that ice will not build up under the unit and
come into contact with the base of the unit. If
allowed, this could cause damage to the coil
and other base components. Also, be sure
there are no air obstructions to the sides or
front of the unit, such as bushes or fences,
that would inhibit condenser airflow.
MOUNTING THE UNIT
1. These units are secured by wall mounting brackets
which secure the unit to the outside wall surface at
both sides. A bottom mounting bracket, attached
to skid for shipping, is provided for ease of
installation, but is not required.
2. The unit itself is suitable for 0" clearance, but the
supply air duct flange and the first 3' of supply
air duct require a minimum of 1/4" clearance to
combustible material for model series W30, W36,
W42, W48 and W60. However, it is generally
recommended that a 1" clearance is used for
ease of installation and maintaining the required
clearance to combustible material. See Figures 3A
– D for details on opening sizes.
3. Locate and mark lag bolt locations and bottom
mounting bracket location (see Figures 3A – D).
4. Mount bottom mounting bracket.
5. Hook top rain flashing, attached to front - right of
supply flange for shipping, under back bend of top.
6. Position unit in opening and secure with fasteners
sufficient for the application such as 5/16" lag/
anchor/carriage bolts; use 7/8" diameter flat washers
on the bolts.
7. Secure rain flashing to wall and caulk across entire
length of top (see Figures 3A – D).
8. For additional mounting rigidity, the return air
and supply air frames or collars can be drilled
and screwed or welded to the structural wall itself
(depending upon wall construction). Be sure to
observe required clearance if combustible wall.
9. On side-by-side installations, maintain a minimum
of 20" clearance on right side to allow access to
control panel and heat strips, and to allow proper
airflow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
NOTE: Refer to Figures 2 – 7 for dimensions and
various mounting configurations.
Manual 2100-654C
Page 7 of 34
Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal)
MODEL
WIDTH
(W)
DEPTH
(D)
HEIGHT
(H)
SUPPLY RETURN
A B C B E F G I J K L M N O P Q R S T
W18HA
W24HA
33.300 17.125 74.563 7.88 19.88 11.88 19.88 35.00 10.88 29.75 20.56 30.75 32.06 33.25 31.00 2.63 34.13 26.06 10.55 4.19 12.00 9.00
W30HA
W36HA
38.200 17.125 74.563 7.88 27.88 13.88 27.88 40.00 10.88 29.75 17.93 30.75 32.75 33.25 31.00 2.75 39.13 26.75 9.14 4.19 12.00 9.00
W42HA
W48HA
42.075 22.432 84.875 9.88 29.88 15.88 29.88 43.88 13.56 31.66 30.00 32.68 26.94 34.69 32.43 3.37 43.00 23.88 10.00 1.44 16.00 1.88
W60HA 42.075 22.432 93.000 9.88 29.88 15.88 29.88 43.88 13.56 37.00 30.00 40.81 35.06 42.81 40.56 3.37 43.00 31.00 10.00 1.44 16.00 10.00
FIGURE 2
All dimensions are in inches. Dimensional drawings are not to scale.
3"
Side View
High Voltage
Cond.
Electrical
Drain
Inlet
Air
Panel
Access
Heater
4° Pitch
Rain Hood
Built In
(Lockable)
Access Panel
Disconnect
Entrance
Electrical
Low Voltage
Entrance
C. Breaker/
Hood for CRV and
ECON models
only
1.250
H
D
J
C
2.13
A
I
K
7.00
MIS-3796
Electric
Heat
Ventilation Air
Front View
Air Outlet
Condenser
Filter Access Panel
Standard
flush vent
door for non-
ERV/CRV
Econ.
models
1
F
G
W
5.88
Supply Air Opening
Shipping
Location
Return Air Opening
Entrances
Electrical
Optional
(Built In)
Brackets
Mounting
Side Wall
Top Rain
Flashing
Bottom Installation
Bracket
Back View
T
O
E
R
S
S
S
S
S
M
.44
N
Q
B
P
L
Manual 2100-654C
Page 8 of 34
12"
12"
12"
12"
12"
20"
20"
8"
20
1
2
"
12"
3
13
16
"
2"
2"
7
1
16
" 7
1
16
"
5"
1"
3"
4"
Typ.
3
1
8
"
4"
Typ.
7
8
"
9"
NOTES:
WALL STRUCTURE
ENTIRE LENGTH OF TOP.
TOP
WALL
OF CAULKING ALONG
PANEL
FOAM AIR SEAL
DUCT
RAIN FLASHING
HEATER ACCESS
MIS-3157 A
Wall Opening and Hole Location View Right Side View
RETURN AIR
TOP FLASHING AT TIME OF INSTALLATION.
OPENING
THE SIDE MOUNTING FLANGES AND UNDER
SEAL WITH BEAD
IT IS RECOMMENDED THAT A BEAD OF
SILICONE CAULKING BE PLACED BEHIND
SUPPLY AIR
SUPPLIED
Return Opening
Supply Opening
J**A UNIT SHOWN, J**L UNIT
CONTROLS AND HEATER ACCESS
IS ON OPPOSITE (LEFT) SIDE.
FIGURE 3A
W18H, W24H
Mounting Instructions
Manual 2100-654C
Page 9 of 34
28"
AC
D
C
12"
12"
12"
12"
12"
B
E
14"
4
11
16
"
4
11
16
"
4"
Typ.
2
7
8
"
7
8
"
7
8
"
4"
Typ.
3
1
8
"
9
1
16
"
4
7
8
"
NOTES:
DUCT
HEATER ACCESS
1/4" CLEARANCE ON ALL
ENTIRE LENGTH OF TOP.
TOP
OF CAULKING ALONG
PANEL
FOAM AIR SEAL
WALL STRUCTURE
TOP FLASHING AT TIME OF INSTALLATION.
FOUR SIDES OF SUPPLY
RAIN FLASHING
FROM COMBUSTABLE
MATERIALS
SUPPLY AIR
SUPPLIED
SILICONE CAULKING BE PLACED BEHIND
RETURN AIR
Right Side View
MIS-3158 A
AIR DUCT IS REQUIRED
OPENING
THE SIDE MOUNTING FLANGES AND UNDER
SEAL WITH BEAD
IT IS RECOMMENDED THAT A BEAD OF
WALL
Wall Opening and Hole Location View
Return Opening
16 7/84 7/164 5/89 7/829 7/8
17 5/83 11/165 3/88 3/828 3/8
EDCBA
COMBUSTIBLE MATERIALS
RECOMMENDED 1" CLEARANCE FROM
REQUIRED DIMENSIONS TO MAINTAIN
COMBUSTIBLE MATERIALS
1/4" MIN. CLEARANCE FROM
REQUIRED DIMENSIONS TO MAINTAIN
Supply Opening
J*R UNIT SHOWN, J*L UNIT
CONTROLS AND HEATER ACCESS
IS ON OPPOSITE (LEFT) SIDE.
FIGURE 3B
W30H, W36H
Mounting Instructions
Manual 2100-654C
Page 10 of 34
D
16"
16"
16"
16"
16"
1
7
8
"
6
1
2
" 6
1
2
"
2
1
8
"
7
8
"
1"
3"
4"
Typ.
4"
Typ.
6
1
2
"
30"
E
16"
A CC
3
1
8
"
B
Wall Opening and Hole Location View
RETURN AIR
1
REQUIRED DIMENSIONS TO MAINTAIN
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
REQUIRED DIMENSIONS TO MAINTAIN
29
DUCT
COMBUSTIBLE MATERIALS
A B C DE
30 1/2
10 1/2
6 1/4 1 1/4 29 3/4
32 12 5 1/2
2
NOTES:
WALL STRUCTURE
1
SUPPLY AIR
IT IS RECOMMENDED THAT A BEAD OF
OPENING
Right Side View
RAIN FLASHING
SILICONE CAULKING BE PLACED BEHIND
RECOMMENDED 1" CLEARANCE FROM
THE SIDE MOUNTING FLANGES AND UNDER
TOP FLASHING AT TIME OF INSTALLATION.
TOP.
PANEL
HEATER ACCESS
FOUR SIDES OF SUPPLY
AIR DUCT IS REQUIRED
FROM COMBUSTABLE
WALL
1/4" CLEARANCE ON ALL
MATERIALS
Supply Opening
FOAM AIR SEAL
SUPPLIED
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
TOP
1
Return Opening
MIS-416 E
Dimension is 21" on 95" tall units.
2
Dimension is 10" on T48H1 & T60H1.
2
Dimension is 6" on T48H1 & T60H1.
3
3
FIGURE 3C
W42H, W48H
Mounting Instructions
Manual 2100-654C
Page 11 of 34
D
16"
16"
16"
16"
16"
2
"6
8
" 5
8
9
7
"
1"
3"
Typ.
1
4"
4"
Typ.
6
1
2
"
30"
E
16"
A CC
"
7
8
3
B
"
8
7
1
1
2
"6
1 1/430 1/2
1/4" CLEARANCE ON ALL
SUPPLIED
FOAM AIR SEAL
A
Supply Opening
SILICONE CAULKING BE PLACED BEHIND
DUCT
FOUR SIDES OF SUPPLY
FROM COMBUSTABLE
1/4" MIN. CLEARANCE FROM
COMBUSTIBLE MATERIALS
REQUIRED DIMENSIONS TO MAINTAIN
OPENING
COMBUSTIBLE MATERIALS
B D E
PANEL
AIR DUCT IS REQUIRED
32
10 1/2
Right Side View
SUPPLY AIR
RECOMMENDED 1" CLEARANCE FROM
MIS-3789
RAIN FLASHING
REQUIRED DIMENSIONS TO MAINTAIN
12
TOP.
MATERIALS
5 1/2
WALL STRUCTURE
2
6 1/4
29
29 3/4
IT IS RECOMMENDED THAT A BEAD OF
THE SIDE MOUNTING FLANGES AND UNDER
WALL
C
Wall Opening and Hole Location View
NOTES:
TOP FLASHING AT TIME OF INSTALLATION.
HEATER ACCESS
RETURN AIR
SEAL WITH BEAD
OF CAULKING ALONG
ENTIRE LENGTH OF
TOP
Return Opening
FIGURE 3D
W60H
Mounting Instructions
Manual 2100-654C
Page 12 of 34
FIGURE 4
Electric Heat Clearance
W30H, W36H, W42H, W48H, W60H
WARNING
A minimum of 1/4" clearance must be maintained between the
supply air duct and combustible materials. This is required for the
rst 3' of ducting.
It is important to insure that the 1/4" minimum spacing is maintained
at all points.
Failure to do this could result in overheating the combustible
material and may result in a re causing damage, injury or death.
SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR
WALL-MOUNTED UNIT SHOWING 1/4" CLEARANCE
TO COMBUSTIBLE SURFACES.
Manual 2100-654C
Page 13 of 34
FIGURE 5
Wall Mounting Instructions
FIGURE 6
Wall Mounting Instructions
SEE FIGURES 3A-D – MOUNTING INSTRUCTIONS
IF REQUIRED
IF REQUIRED
DUCT
OPENING
RETURN AIR
SUPPLY AIR
WOOD FRAME WALL INSTALLATION
OPENING
WALL BEFORE
MOUNT ON UNIT
OPENING
BEFORE INSTALLATION
BOTTOM MOUNTING
CONCRETE BLOCK WALL INSTALLATION
BRACKET. MOUNT ON
OPENING
WOOD OR STEEL SIDING
OPENING
INSTALLING UNIT.
RETURN AIR
WALL STRUCTURE
RETURN AIR
SUPPLY AIR
FACTORY SUPPLIED
RAIN FLASHING.
SUPPLY AIR
MIS-548 A
SIDE VIEW
I
A
C
K
E + 1.000
B
1.000
SUPPLY DUCT
OVER FRAME
INTERIOR FINISHED WALL
ALL AROUND DUCT
FRAMING MATERIAL
EXTERIOR FINISH WALL
OPENING
FOR ACTUAL DIMENSIONS.
2 x 4'S, 2 x 6'S &/OR
STRUCTURAL STEEL
ATTACH TO TOP
1.000" CLEARANCE
1.000" CLEARANCE
PLATE OF WALL
C
SEE UNIT DIMENSIONS, FIGURE 2,
OPENING
RETURN DUCT
2 x 6
ATTACH TO BOTTOM
OVER FRAME
PLATE OF WALL
L
THIS STRUCTURAL MEMBER
LOCATED TO MATCH STUD
SPACING FOR REST OF WALL.
A SECOND MEMBER MAY BE
REQUIRED FOR SOME WALLS.
MIS-549 B
ALL AROUND DUCT
Manual 2100-654C
Page 14 of 34
FIGURE 7
Common Wall Mounting Installations
RAFTERS
DUCTED SUPPLY
RAFTERS
RAFTERS
RAFTERS
FALSE WALL
OUTSIDE
WALL
NO DUCT
SUPPLY AIR
GRILLE
RETURN AT UNIT
WALL
RAISED FLOOR
RETURN AIR
LOWERED
GRILLE
RETURN AIR
WALL
CEILING SURFACE
SPACE
RETURN AIR
RETURN AIR GRILLE
WALL
OUTSIDE
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
SUPPLY AIR DUCT
SUPPLY AIR DUCT
SUPPLY AIR DUCT
RETURN AIR
OPENING W/ GRILLE
OUTSIDE
W/ GRILLE
FALSE WALL INSTALLATION
CEILING
RAIN
FLASHING
RAIN
FLASHING
SUPPLY DUCT MAYBE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
FINISHED CEILING
WALL
CLOSET WALL
SURFACE
OPENING W/ GRILLE
SLEEVE
OR BELOW CEILING RAFTERS AS SHOWN
SUPPLY AIR DUCT
OUTSIDE
WALL SLEEVE
SUPPLY DUCT MAY BE LOCATED IN AN ATTIC
OR BELOW CEILING RAFTERS AS SHOWN
FINISHED CEILING SURFACE
RAIN
FLASHING
FINISHED CEILING SURFACE
RAIN
FLASHING
CLOSET INSTALLATION
FINISHED
MIS-550 C
FREE AIR FLOW
RETURN AIR
Manual 2100-654C
Page 15 of 34
WIRING – MAIN POWER
Refer to the unit rating plate for wire sizing information
and maximum fuse or circuit breaker size. Each
outdoor unit is marked with a “Minimum Circuit
Ampacity”. This means that the field wiring used must
be sized to carry that amount of current. Depending
on the installed KW of electric heat, there may be
two field power circuits required. If this is the case,
the unit serial plate will so indicate. All models are
suitable only for connection with copper wire. Each
unit and/or wiring diagram will be marked “Use Copper
Conductors Only”. These instructions must be adhered
to. Refer to the National Electrical Code (NEC) for
complete current carrying capacity data on the various
insulation grades of wiring material. All wiring must
conform to NEC and all local codes.
The electrical data lists fuse and wire sizes (75°C
copper) for all models including the most commonly
used heater sizes. Also shown are the number of field
power circuits required for the various models with
heaters.
The unit rating plate lists a maximum fuse or circuit
breaker that is to be used with the equipment. The
correct size must be used for proper circuit protection
and also to assure that there will be no nuisance
tripping due to the momentary high starting current of
the compressor motor.
The disconnect access door on this unit may be locked
to prevent unauthorized access to the disconnect. To
convert for the locking capability, bend the tab located
in the bottom left-hand corner of the disconnect
opening under the disconnect access panel straight
out. This tab will now line up with the slot in the door.
When shut, a padlock may be placed through the hole
in the tab preventing entry.
See page 20 for important information on three phase
scroll compressor start ups.
See Table 8 on page 30 for electrical specifications.
WIRING – LOW VOLTAGE WIRING
All 230/208V 1 phase and 3 phase equipment have
dual primary voltage transformers. All equipment
leaves the factory wired on 240V tap. For 208V
operation, reconnect from 240V to 208V tap. The
acceptable operating voltage range for the 240 and
208V taps are:
TAP RANGE
240 253 – 216
208 220 – 187
NOTE: The voltage should be measured at the field
power connection point in the unit and while
the unit is operating at full load (maximum
amperage operating condition).
For low voltage wiring, an 18 gauge copper, color-coded
cable is recommended. See Table 4 on page 16 for
more information.
Low Voltage Connections
These units use a 24-volt AC low voltage circuit.
The “RT” terminal is the 24V transformer output,
and the “R” terminal is the 24VAC hot terminal
for the operation of the equipment. “RT” and “R”
are connected with brass jumper bar which can be
removed and “RT” and “R” connected to external
NC (normally closed) contact such as a fire/smoke
detector that will cause immediate shutdown of the
equipment upon activation.
“C” terminal is 24VAC common and is grounded.
“G” terminal is the fan input.
“Y1” terminal is the 1st Stage input for cooling.
“Y2” terminal is the 2nd Stage compressor input for
cooling (if equipped with an economizer).
“B/W1” terminal is the reversing valve input. The
reversing valve must be energized for heating mode.
“W2” terminal is the 2nd stage heat (if equipped).
“W3” terminal is the emergency heat input. This
terminal energizes the emergency heat relay. This is
not applicable on units with dehumification.
“A” terminal is the ventilation input. This terminal
energizes any factory-installed ventilation option and
indoor blower.
“D” terminal is the dehumidification input. If
installed, this terminal energizes any factory-installed
dehumidification option.
"L/1" terminal is the compressor lockout output. This
terminal is activated on a high or low pressure trip by
the electronic heat pump control. This is a 24VAC
output.
LOW VOLTAGE CONNECTIONS FOR DDC CONTROL
Standard Units
Units w/
Economizers
Fan Only Energize G Energize G
1st Stage
Cooling Mode
Energize Y1, G Energize Y1, G
2nd Stage
Cooling Mode
Energize Y1, Y2, G
Heat Pump Heating
Energize Y1, G,
B/W1
Energize Y1, G,
B/W1
2nd Stage Heating
w/heat pump
(if employed)
Energize Y1, G,
B/W1, W2
Energize Y1, G,
B/W1, W2
Ventilation Energize A Energize A
Dehumidification
(if employed)
Energize D Energize D
Emergency Heat*
Energize G, W2,
W3
Energize G, W2,
W3
* Not applicable on units with dehumidification
Manual 2100-654C
Page 16 of 34
Part Number Predominate Features
8403-057
(TH3110D1040)
1 stage Cool, 1 stage Heat; Electronic Non-Programmable; Auto or Manual changeover
8403-058
(TH5220D1151)
2 stage Cool, 2 stage Heat; Electronic Non-Programmable;
HP or Conventional (Default: HP); Auto or Manual changeover
8403-059
(TH5220D1219/U)
2 stage Cool, 2 stage Heat; Electronic Non-Programmable;
HP or Conventional (Default: AC); Auto or Manual changeover
8403-060
(1120-445)
3 stage Cool; 3 stage Heat; Electronic Programmable/Non-Programmable;
HP or Conventional; Auto or Manual changeover; Dehumidification Output
CS9B-THO
3 Stage Heat, 3 Stage Cool; Programmable/
Non-Programmable
; HP or
Conventional
;
Auto or Manual Changeover; Humidity Sensor w/dehumidification; Motion Sensor
wIntelligent Learning Control; BACnet-compatible
CS9B-THOC
3 Stage Heat, 3 Stage Cool,
Programmable/
Non-Programmable
; HP or
Conventional
;
Auto or Manual Changeover; Humidity Sensor w/dehumidification; CO
2
Sensor; Motion
Sensor w/Intelligent Learning Control; BACnet-compatible
CS9BE-THO
3 Stage Heat, 3 Stage Cool,
Programmable/
Non-Programmable
; HP or
Conventional
;
Auto or Manual Changeover; Humidity Sensor w/dehumidification; Motion Sensor
wIntelligent Learning Control; BACnet-compatible; Ethernet-compatible
CS9BE-THOC
3 Stage Heat, 3 Stage Cool,
Programmable/
Non-Programmable
; HP or
Conventional
;
Auto
or Manual Changeover; Humidity Sensor w/dehumidification; CO
2
Sensor; Motion Sensor
w/Intelligent Learning Control; BACnet-compatible; Ethernet-compatible
TABLE 1
Wall Thermostats
TABLE 2
Humidity Controls
Part Number Predominate Features
8403-038
(H600A1014)
SPDT switching, pilot duty 50VA @ 24V
Humidity range 20-80% RH
8403-047
(H200-10-21-10)
Electronic dehumidstat SPST closes-on-rise
Humidity range 10-90% with adjustable stops
TABLE 3
CO
2
Controller
Part Number Predominate Features
8403-067
Normally Open SPST relay closes-on-rise
24V dual wave length sensor. Default setting
950ppm, adjustable to 0-2000ppm
Default off setting 1000ppm, adjustable to
0-200 ppm can be calibrated
TABLE 4
Thermostat Wire Size
Transformer
VA
FLA Wire Gauge
Maximum
Distance
In Feet
55 2.3
20 gauge
18 gauge
16 gauge
14 gauge
12 gauge
45
60
100
160
250
Manual 2100-654C
Page 17 of 34
Thermostat
W1/E
A
YO/D
LO/BY2Y1R GC W2
Bard #8403-060
6 1012119 412-Pin
Vent Plug
23 5 7
CO2 OUT
Optional CO2 Controller
Bard Part #8403-067
6
5
4
3
2
1
TEMP-OUT
24VAC
W3/8
76532R
Unit Low
Voltage
Term. Strip
W2C GRT Y1 Y2
B/W1
L/1 DA 4
1
8
7
Do not connect "A" from thermostat if optional CO2 controller is used
0-10 VDC modulating C02 control signal for modulating ventilation control (optional for
ECON only - see vent instruction manuals)
6
Relay Provided with Completestat5
4
Factory installed jumper. Remove jumper and connect
to N.C fire alarm circuit if emergency shutdown required.
3
Wire not needed below 15KW.2
Wire required for dehumidification models only.
Do not add these wires if setting up for modulating control. See note 7.
W1/E
SC
SC
SC
Completestat
Model #CS9B-THO or
Model #CS9BE-THO
W2
COM
G
24V
Y1 Y2 O/B L DA GND
7
MIS-3821
1
4
Yellow
5
White
Blue
3
Orange
4
2
Red
4
6
If not equipped with a ventilation option to plug in, a jumper plug must be installed.
3
ALL VENT OPTIONS PLUG IN HERE
8
2
Ensure that thermostat is configured for heat pump, and not heat/cool. Must be configured to
programmable and fan set to be programmed fan for the “A” output to function during scheduled
occupied periods. Must be configured for multi-stage for Y1 output to be active 1st stage cooling.
For dehumidification, must be configured for “No Economizer” for YO/D to be active for humidity
control.
FIGURE 8
Programmable Thermostat Connections
MIS-3821A
Manual 2100-654C
Page 18 of 34
FIGURE 9
Non-Programmable Thermostat Connections
(not for use on models equipped with an economizer)
CO2 OUT
Optional CO2 Controller
Bard Part #8403-067
6
5
4
3
2
1
TEMP-OUT
24VAC
W3/8
76532R
Unit Low
Voltage
Term. Strip
W2C GRT Y1 Y2
B/W1
L/1 DA 4
5 Do not add these wires if setting up for modulating control. See note 7.
7
Jumper needs added.8
For 8403-059, change "system type", set up Function 1, From 6 (2 Heat/ 1 Cool)
to 5 (2 Heat / 1 Cool Heat pump). For 8403-058, No change required.
3
Wire required for dehumidification models only.
0-10 VDC Modulating CO2 control signal for modulating ventilation control
(Optional for ECON Only) - See vent installation manual.
6
Factory installed jumper. Remove jumper and connect
to N.C fire alarm circuit if emergency shutdown required.
4
Wire not needed below 15KW.
2
For vent operation, add jumper if optional CO2 controller is not used.
Vent will run while blower is energized.
1
6 1012119 412-Pin
Vent Plug
23 5 7
4
O
6
ALL VENT OPTIONS PLUG IN HERE
R
2
AUX EC G O/B
4
35
6
8403-038
1 Stage Heat
Y
Electronic Humidistat
Mechanical Humidistat
8403-059
(TH311OD1040)
BCRc
(TH522OD1219/U)
8403-057
R G
Rc
W
Y
8403-047
Units With Dehumidification
3
If not equipped with a ventilation option to plug in, a jumper plug must be installed.
1
8403-058
(TH522OD1151)
1 Stage Cool
5
8
7
MIS-3822 A
1 Stage Cool
2 Stage Heat
Manual 2100-654C
Page 19 of 34
START UP
THESE UNITS REQUIRE R-410A
REFRIGERANT AND POLYOL ESTER OIL.
GENERAL
1. Use separate service equipment to avoid cross
contamination of oil and refrigerants.
2. Use recovery equipment rated for R-410A
refrigerant.
3. Use manifold gauges rated for R-410A (800
psi/250 psi low).
4. R-410A is a binary blend of HFC-32 and HFC-
125.
5. R-410A is nearly azeotropic—similar to R-22 and
R-12. Although nearly azeotropic, charge with
liquid refrigerant.
6. R-410A operates at 40-70% higher pressure
than R-22 and systems designed for R-22 cannot
withstand this higher pressure.
7. R-410A has an ozone depletion potential of zero,
but must be reclaimed due to its global warming
potential.
8. R-410A compressors use Polyol Ester oil.
9. Polyol Ester oil is hygroscopic; it will rapidly absorb
moisture and strongly hold this moisture in the oil.
10. A liquid line dryer must be used—even a deep
vacuum will not separate moisture from the oil.
11. Limit atmospheric exposure to 15 minutes.
12. If compressor removal is necessary, always plug
compressor immediately after removal. Purge with
small amount of nitrogen when inserting plugs.
TOPPING OFF SYSTEM CHARGE
If a leak has occurred in the system, Bard
Manufacturing recommends reclaiming, evacuating
(see criteria above) and charging to the nameplate
charge. If done correctly, topping off the system
charge can be done without problems.
With R-410A, there are no significant changes in the
refrigerant composition during multiple leaks and
recharges. R-410A refrigerant is close to being an
azeotropic blend (it behaves like a pure compound
or single component refrigerant). The remaining
refrigerant charge, in the system, may be used after
leaks have occurred and then “top-off” the charge by
utilizing the pressure charts on the inner control panel
cover as a guideline.
REMEMBER: When adding R-410A refrigerant, it
must come out of the charging cylinder/tank as a
liquid to avoid any fractionation, and to ensure optimal
system performance. Refer to instructions for the
cylinder that is being utilized for proper method of
liquid extraction.
SAFETY PRACTICES
1. Never mix R-410A with other refrigerants.
2. Use gloves and safety glasses. Polyol Ester oils
can be irritating to the skin, and liquid refrigerant
will freeze the skin.
3. Never use air and R-410A to leak check; the
mixture may become flammable.
4. Do not inhale R-410A—the vapor attacks
the nervous system, creating dizziness, loss
of coordination and slurred speech. Cardiac
irregularities, unconsciousness and ultimately
death can result from breathing this concentration.
5. Do not burn R-410A. This decomposition
produces hazardous vapors. Evacuate the area if
exposed.
6. Use only cylinders rated DOT4BA/4BW 400.
7. Never fill cylinders over 80% of total capacity.
8. Store cylinders in a cool area, out of direct
sunlight.
9. Never heat cylinders above 125°F.
10. Never trap liquid R-410A in manifold sets, gauge
lines or cylinders. R-410A expands significantly
at warmer temperatures. Once a cylinder or line is
full of liquid, any further rise in temperature will
cause it to burst.
WARNING
Failure to conform to these practices
could lead to damage, injury or death.
Manual 2100-654C
Page 20 of 34
IMPORTANT INSTALLER NOTE
For improved start-up performance, wash the indoor
coil with dishwashing detergent.
HIGH AND LOW PRESSURE SWITCH
All W**H Series wall-mounted heat pump models
are supplied with a remote reset for the high and low
pressure switch. If tripped, this pressure switch may
be reset by turning the thermostat off then back on
again.
THREE PHASE SCROLL COMPRESSOR
START UP INFORMATION
Scroll compressors, like several other types of
compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with
single phase compressors since they will always start
and run in the proper direction.
However, three phase compressors will rotate in either
direction depending upon phasing of the power.
Since there is a 50-50 chance of connecting power
in such a way as to cause rotation in the reverse
direction, verification of proper rotation must be made.
Verification of proper rotation direction is made by
observing that suction pressure drops and discharge
pressure rises when the compressor is energized.
Reverse rotation also results in an elevated sound level
over that with correct rotation, as well as substantially
reduced current draw compared to tabulated values.
Verification of proper rotation must be made at the
time the equipment is put into service. If improper
rotation is corrected at this time, there will be no
negative impact on the durability of the compressor.
However, reverse operation for over 1 hour may have a
negative impact on the bearing due to oil pump out.
NOTE: If compressor is allowed to run in reverse
rotation for several minutes, the compressor’s
internal protector will trip.
All three phase ZP compressors are wired identically
internally. As a result, once the correct phasing
is determined for a specific system or installation,
connecting properly phased power leads to the same
Fusite terminal should maintain proper rotation
direction.
The direction of rotation of the compressor may be
changed by reversing any two line connections to the
unit.
PHASE MONITOR
All units with three phase scroll compressors are
equipped with a three phase line monitor to prevent
compressor damage due to phase reversal.
The phase monitor in this unit is equipped with two
LEDs. If the Y signal is present at the phase monitor
and phases are correct, the green LED will light.
If phases are reversed, the red fault LED will be lit and
compressor operation is inhibited.
If a fault condition occurs, reverse two of the supply
leads to the unit. Do not reverse any of the unit factory
wires as damage may occur.
CONDENSER FAN OPERATION
Applies to W42, W48 and W60 models only. The
condenser fan motor on 230/208 volt, one and three
phase, 60 HZ units is a two-speed motor that comes
factory wired on high speed for peak performance. If
ambient conditions permit, it can be reconnected to
low speed (red wire) for lower sound level (see unit
wiring diagram).
50 HZ models must have fan wired on low speed.
These models are factory wired on low speed.
SERVICE HINTS
1. Caution owner/operator to maintain clean air filters
at all times and to not needlessly close off supply
and return air registers. This reduces airflow
through the system, which shortens equipment
service life as well as increasing operating costs.
2. Check all power fuses or circuit breakers to be sure
they are the correct rating.
3. Periodic cleaning of the outdoor coil to permit full
and unrestricted airflow circulation is essential
.
VENT CONNECTION PLUG
All units are equipped with a vent connection plug
in the side of the control panel for the different
ventilation packages to plug in to. If the compressor
will not start and there is no "Y1" at the compressor
control module, first check to make sure that either
the optional vent is plugged into the vent connection
plug or the supplied jumper plug is in place. The unit
will not operate without anything plugged in. This plug
is located on the side of the control panel behind the
front vent door (behind the filter access door). If the
unit is supplied with a factory-installed vent package,
it will be plugged in but the jumper plug will also be
tethered next to the connection for troubleshooting
purposes, if necessary.
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Bard W18HA-A Installation Instructions Manual

Bard
Brand
Bard
Model
W18HA-A
Category
Heat pumps
Type
Installation Instructions Manual
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